过渡金属催化醇与胺有氧脱水反应及相关研究进展

Recent Advances of Transition Metal-Catalyzed Aerobic Dehydrative Reactions of Alcohols and Amines and Related Researches

与其他胺和酰胺衍生物的合成方法相比,过渡金属催化醇与各类胺和酰胺的脱水N-烷基化反应是一种相对绿色、原子经济性较高的方法,一般被称为"借氢"或"氢自动转移"反应及其方法学.近年来,在空气氛围下过渡金属催化醇与胺和酰胺的有氧脱水N-烷基化反应,可使用更稳定的金属催化剂、可在无配体、空气等更温和简单的条件下进行,也引起了人们的极大关注.主要介绍近年来过渡金属催化下醇与胺和酰胺在空气或者氧化剂作用下构建C—N,C=N键合成胺和酰胺衍生物以及亚胺类化合物的有氧脱水反应进展情况,同时也对相关有氧脱水C-烷基化反应进行简单介绍.相关反应的机理研究也将作适当讨论.

In comparison with other methods, transition metal-catalyzed dehydrative N-alkylation of amines and amides with alcohols, commonly known as the borrowing hydrogen or hydrogen autotransfer reactions and the methodology, is a compara- tively green and atom-economic method for the synthesis of the useful amine and amide derivatives. Recently, transition metal-catalyzed aerobic dehydrative N-alkylation method has also attracted much attention, for the reactions can be readily conducted under milder and simpler conditions by using the more stable metal catalysts under the air atmosphere. In this re- view, we summarize the recent advances of transition metal-catalyzed aerobic dehydrative C--N and C=N bond forming reactions of alcohols with amines and amides for the synthesis of the amine and amide derivatives and imines, as well as those of the related aerobic dehydrative C-alkylation reactions. Mechanisms of the above reactions are also discussed.